Allied & ICAR Exam Bank • ALLIED_1820MCQ • 2 Marks
Section 8: General Aptitude
Analytical & Spatial Aptitude
Subtopic: Spatial Reasoning & 3D Representations
Question Statement:
In a corner cube retroreflector consisting of three mutually perpendicular flat mirrors, how is an incoming ray of light reflected?
Options:
(A) Parallel to the incident direction, regardless of the angle of entry
(B) At 90 degrees to the incident direction
(C) Diffused in all directions
(D) Absorbed completely
Answer Key:
A
Step-by-Step Solution & Explanation
A corner-cube retroreflector reflects incoming light rays back along their exact original path (anti-parallel) due to three successive 90-degree planar reflections.